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Racing Fuel Systems • View topic - Opinions on this IFR and IAB combination

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Opinions on this IFR and IAB combination

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Opinions on this IFR and IAB combination

Postby 55LS403 » Sat Apr 10, 2021 4:48 pm

Two 4150 750 carbs on a tunnel ram 403ci
13.2:1 compression with 92 degrees cam overlap.
Carbs are both setup with 35 ifrs and 70 iab.
Curious if anyone thinks this could potentially lead to a excessively rich idle circuit. Thanks
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Re: Opinions on this IFR and IAB combination

Postby Lyonsperf » Sat Apr 10, 2021 7:17 pm

What are you using it for?
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Re: Opinions on this IFR and IAB combination

Postby 55LS403 » Sat Apr 10, 2021 7:21 pm

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Re: Opinions on this IFR and IAB combination

Postby Lyonsperf » Sat Apr 10, 2021 8:34 pm

Try it first. If its pig rich around the pits, put the small wire in the IFRs.
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Re: Opinions on this IFR and IAB combination

Postby HarrysTaxi2 » Sat Apr 10, 2021 11:14 pm

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Re: Opinions on this IFR and IAB combination

Postby jmarkaudio » Thu Apr 22, 2021 11:49 pm

Try .031/65.
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